Overview
DENIA ONDARA PEDREGUER wastewater treatment plant serves over 150,000 people in Ondara, Comunitat Valenciana, Spain. It operates under the EU Urban Waste Water Treatment Directive, which mandates advanced treatment for large agglomerations dischargin
The DENIA ONDARA PEDREGUER wastewater treatment plant is a major facility serving the municipalities of Dénia, Ondara, and Pedreguer in the Marina Alta region of Alicante, Comunitat Valenciana, Spain. With a population equivalent of over 150,000, it is classified as a large agglomeration under EU regulations. As a plant of this scale in a coastal region, it is expected to provide at least secondary treatment, and likely tertiary treatment to protect the sensitive Mediterranean coastal environment. The plant's designed capacity is 1.00 cubic meters per second, reflecting its role in managing significant wastewater flows from urban and tourist areas. The treated effluent is discharged into the Mediterranean Sea via the local drainage network, impacting the coastal waters of the Costa Blanca. This area supports diverse marine life and is important for tourism and fisheries. The plant's performance is critical to maintaining water quality in the region's beaches and marine ecosystems.
Environmental context
The plant discharges into the Mediterranean Sea near the Costa Blanca, a region known for its tourism and marine biodiversity. The receiving waters ultimately flow into the Balearic Sea, part of the western Mediterranean basin. This coastal area supports seagrass meadows and fish nurseries, making nutrient removal essential to prevent eutrophication and algal blooms.
Frequently asked questions
The plant is located in Ondara, in the Marina Alta region of Alicante, Comunitat Valenciana, Spain. Its address is Camí de les Alfatares, Ondara.
The plant serves a population equivalent of over 150,000 people, covering the municipalities of Dénia, Ondara, and Pedreguer.
The treated effluent is discharged into the Mediterranean Sea, likely via a coastal outfall, impacting the marine environment of the Costa Blanca.
As a large agglomeration (>150,000 PE) in a coastal sensitive area, the plant must comply with the EU Urban Waste Water Treatment Directive (91/271/EEC), requiring at least secondary treatment and likely tertiary nutrient removal.
In Spain, plants of this scale typically employ secondary biological treatment (e. g. , activated sludge) followed by tertiary processes such as disinfection or nutrient removal, especially when discharging into sensitive coastal waters.
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